Commands:
Added the /simplemultistats command and its shortcut /sms.

Available arguments:
/sms reload — reloads the plugin configuration.
/sms help — displays the help menu.

Placeholders:
%sms_killentity_<world>% — mob kills (non‑player entities).
%sms_blockplace_<world>% — blocks placed.
%sms_blockbroken_<world>% — blocks broken.
%sms_playtime_<world>% — playtime in format HH:MM:SS.
%sms_rawplaytime_<world>% — playtime in seconds.
%sms_damagedeal_<world>% — total damage dealt.
%sms_damagetake_<world>% — total damage received.

Fixes and Improvements:
Fixed a bug with disabling playtime tracking.
Updated the config.yml structure: removed the option to disable playtime tracking separately.
Fixed a bug with multi‑world support (improved world linking).

Default world links:
world → world
world_nether → nether
world_the_end → end

Custom links (aliases) for worlds can be defined in config.yml.

Other changes:
Removed unnecessary files to keep the plugin clean and lightweight.